21318325

素因数分解:

$5^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2833}}^1$

素因数の和:2893

約数の個数: 24

約数和(自身を含む): 30924608

約数和(自身を除く): 9606283

約数列:

[1, 5, 7, 25, 35, 43, 175, 215, 301, 1075, 1505, 2833, 7525, 14165, 19831, 70825, 99155, 121819, 495775, 609095, 852733, 3045475, 4263665, 21318325]

約数ペア:

[(1, 21318325), (5, 4263665), (7, 3045475), (25, 852733), (35, 609095), (43, 495775), (175, 121819), (215, 99155), (301, 70825), (1075, 19831), (1505, 14165), (2833, 7525)]